Forgetting wife's birthday

Husband forgot to wish his wife a happy birthday. He came home late at night from the office...

His wife shouted: How would you feel if you didn't see me for the next few days? 
He couldnt believe his luck. He replied at once: '' Wowww... That would be great..!'' 

Monday passed, and he didn't see her...

Tuesday, he didnt see her

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Wednesday passed too
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On Thursday the swelling was better and he could see her from the corner of his left eye... :D